Water-tube boiler.



S. 0.1MUN0Z. WATER TUBE BOILER.

APPLICATION FILED JAN.9, 1905.

9624549 Patented June 28, i910.

E f a 4 senese.

`nrnn sarnfrns Ai3-nrnerr ernten f srorrono c. Munoz,` or Monitorare, NEW JERSEY, Assrenon :tol THE nABcocK te WILoox ooMrANY, or NEW YORK, n. Y., A conronerroiv or ynew JERSEY.

wnrnnrmsn :Bomen Speeiication of Letters Patent. Eatned Jun@ 28, hgli.

Aapplication filed January 9,1905. serial No. 240,174.

To all 'whom it may-concern:

'Be it known that I,`S1G NONo C. MUNoz, a citizen of the United States, and a resident ofthe city of Montclair, county of Essex, and State of New Jersey, have invented certain new and useful Improvementsin Water-Tube Boilers, of which the following is ay specification, reference beingl had to the -accomfpanying drawings, forming a part hereo Y .l

In awater tube boiler it is lwell known that the lowermost tubes, which are arranged directly 'over the ire grate and upon which the direct heat of the lire imping'es, do from 55 to 65- perv centum of the entire work done by the boiler, and that in prac.

tice about 90 per centum of the repair work required to be done on a water tube boiler 1 is upon these lowermost tubes which are destroyed through the action of the heat, owing to aninsuicient supply of wat/er, .the water being generally circulated to them Afrom above and passin through all ofthe upper tubes before reac in the lower ones.

It is therefore particulary necessary to keep the lower tubes well supplied Yfvv'ithy water in order to` guard against the burning out of such tubes. f p

As a general' rule, in water tube boilers, the water is fed into one of the-drums, usually the upper drum, `and then down the vertical headers or water legs into the horizontal tubes, the water, asi is obvious, thus supplying the upper horizontal tubes while permitting' the owermost tubes, unless the 4horizontal tubes are very few in number and the circulation is very free, to become deprived of water, to be choked with sediment,

nd. nally burned out.

In accordance with the present invention, the water. su ply is arranged to feed the lowermost tu es over the fire grate in a direct manner or before the uppermost tubes are fed so that these lowermost tubes shall Vat all times be properly filled.-

The invention will be more fully described hereinafter with reference to the ac companying drawings, in which,

to; and Fig. 2 is a view in elevation takenv i through the central portion of the boiler.

The water .tube boiler in which the present invention may be ap lied `may be ofany suitablevform or type, ut it is preferably' of the formi or type illustrated in Letters Patent-of United States No. 759,463, and dated May 10th drawing such aboiler has upper drums a, lower ormud drums b `and vertical water tubes Ac connecting the upper and lowerI ydrums onathe same sides,v

`and described in the above-recitedv Letters Patent) are. connected with a drum Z near the bottoni and, in the present case, atfthe rear end of the boiler. V'Ihis drum Z is fed directly from the main water supply in the drums a, by any suitable connection or con- 'nections through the boiler. In the present case these*connections comprise the side tubes c at therear endof the boiler which .are exposed of course to the direct heat of" the furnace. lor the purpose of making these connections, the drum Z is provide with side extensions h which these particular 1904. As shown in the tubes c enter,`said extensions being formed integral with or being secured to the drum l in any suitable manner and forming practically a U-shaped drum. Into the'middle lportion of this drum the lowerl ends of the eaders or other wat-er leg connections f are fitted, providing a construction which, as will be obviousLwill assure the roper feeding of the' lowermost heating tu es. In the present case nipples 7e are inserted between the headers and drum Z to .form satisfactory Ajoints.

The feed water. is introduced. into either or both of the lower or mud drums b through such means as a pipe`z',and`the lower or mud drums are connected, as shown, with the upper drums a by the forwardportion of the side tubes c. In this way theiwater entering vthe boiler -through the lower' drums passes up through the vertical side ,tubes connect ing the lower and upper' drums. There, meetin the upward circulation from thel incline tubes which, is passing into the forward portion of the upper .-drum, the

Water iiowing into'the upper drum from `the vertical tubes `1s directed backward toward the -rear end of the' drum, some of the water passing down a ain through the vertical tubes, as indicate by the arrows in the' drawing into the mud drums, while the rest of the water and by far the greater part lowermost horizontal' tubes, without first v 1. In a water tube boiler,

`with the heating tubes, of means to contain thereb -makes it easier to feeding 1 the uppermost horizontal tubes. Sucha construction does away with the cross boxes or other direct connection between' the rear headers vand the upper drums and substantially reduces the cost of manu acture of boilers of this class. It also increases the area for smoke connections and et `at the working parts of the boiler; and y keeping a substantial waterl su ply. where it is most needed it in-y creases t e capacity, economy and general eiciency of the boiler. y v It will be understood that the improvements are not limited to the recise construction shown and described erein but that the invention is capable of many modifications in which it may be embodied without departing from the spirit of the invention.

I claim Y as my .inventionz the main body of water, a U-sha ed drum middle portion and side extensions, means tov feed'the heating tubes from the middle ortion of the U-shaped drum, a connection etween the means to contain the main body tubes, headers at said ends of the heating tubes communicating at the bottom with the U-shaped drum, and side tubes exosedtto .the heat of the furnace on each si e of the of which connect the boiler some of which connect the upper `drums and the U-shaped drum and others upper drum1 and' the mud drum. 3. In a water tube boiler, the combination with inclined heatin tubes, of' an upper drum on each side o the heating tubes, a mud drum on each side of the heating tubes, a U-sha ed drum beneath the lower ends of the heatlnl7 tubes, headers at said ends of the .to the heat of the furnace on each side of i y into the mud drums. the combination`I y "this -twenty-thlrd day of December A. D., 1904. 'near the bottom of the .boiler aving.A a.. r

the boiler some of which connect the u per drums and the U,shaped` drum and ot ers of which connect the upper drum and the mud drum,.v and means to introduce water .This specification signed and witnessed In the presence of l ALFRED W. KIDDLE, 'A iv'rHoNY N. JESBERA. 

